I agree with you 100%. The concept of the Batmobile works (barely) in the comics and better in the cartoons.
But in a movie: uh-uh. I cringe every time they show any of the Batmobiles in any of the movies. The Schummacher ones were the worse - with all the bright neon highlights to draw attention to it. LAME!!
If Batman has to drive around in something (and I don't argue that he needs wheels to get around) - it would be cool to have him drive something like the Green Hornet's car - Black Beauty.
Something distinct, but not so flashy with all the huge fins and and flares. Something that could blend into the crowd - not draw attention to itself.